Grease-cup.



N. W. CUMMINS.

GREASE CUP. APPLICATION FILED DEC.12, 1914.

Patented J une 22, 1915.

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NORMAN W. CUMMINS, F BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BURNS 85 BASSICK COMPANY, OF BBIDGEPOBT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

GREASE-CUP.

Specification of Letters Patent.

Patented June 22, 1915..

Application filed. December 12, 1914. Serial No. $76,854.

To all whom it may concern Be it known that I, NORMAN W. CUM- MINS, a citizen of the United States, residing at the city of Bridgeport, county of Fair field, and State of Connecticut, have invented certain new and useful Improvements in Grease-Cups; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in lubricators and more particularly to that class of lubricators known as hand operated force feed grease cups.

It is a known fact that in devices of the type indicated which have a screw-threaded cap or follower, the cap or follower is constantly working loose or backing off due to the jar of the mechanism to which the lubricator is connected.

It is therefore the object of the present invention to provide a simple and efficient means by which the cap or follower is permitted to be rotated in either direction by pressure, but will be prevented from turning in either direction by slight jars such as are common to working machinery.

Referring to the drawings: Figure 1 is a vertical sectional view of a grease cup em bodying the invention; Fig. 2 is a sectional view taken on the line 2-2 of Fig. 1; Fig. 3 is a sectional View of the pawls, together with the means for securing them in place in the cap of the lubricator; and Fig. 4 is a top plan view of the pawls and their securing means.

Referring more particularly to the draw ings, the numeral 1 designates the hollow body of a force feed grease cup which in accordance with the present invention has its lower end portion screwthreaded at 2 and its upper portion formed hexagonal in shape at 3. It is to be understood that the upper portion 3 of the grease cup 1 need not necessarily be hexagonal, but may be square, or octagonal since the invention will operate equally as well with the last named forms of bodies.

Suitably secured as by crimping around the outturned flange 5 of the body portion of the grease cup 1 is a screw-threaded flange 6, which is in threaded engagement with an internally screw-threaded cap that is adapted to force the lubricant through an opening in the lower end of the body portion 1 when the cap is moved downwardly upon said body portion. The upper end of the cap is provided with an annular groove or recess 11 'as shown in Fig. 1, to receive the peripheral edge of a disk 12 the body of which latter is provided with a pair of spaced openings 13, see Figs. 1 and 3. Passing through the openings 13 are the legs or arms 16 of an inverted U-shaped member 11 that is formed of spring metal the portion 15 of which member engages the part of the upper face of the disk between the spaced openings 13. The lower extre1nity of each of the depending spring legs 16 is dished at 17 to provide outwardly projecting pawls 18, the purpose of which will be hereinafter explained.

In assembling the disk 12 and the cap 10, the disk is dished at 20 to reduce its diameter, and is then inserted in the cap until the edges 21 of the disk seat against the wall 22 of the cap 10. The disk is then expanded or flattened out thus forcing the edges 21 thereof into the annular groove or recess 11 and securing the disk in place in the cap.

By forming the upper portion 3 of the body portion 1 of the grease cup of angular cross sectional form it will be seen that means is not only provided for engagement with a wrench to attach the grease cup to machinery or the like, but the interior of the angular portions 3 provides a plurality of elongated pawl seats of angular conformation, the hexagonal part 3 thus performing a dual function, since the exterior of its walls provides a wrench surface and the interiors of the walls, pawl seats.

From the foregoing it will be seen that upon turning of the cap 10, the pawls 17 on the lower extremity of the spring legs 16 will engage in the pawl seats 30 and prevent accidental turning of the cap 10 with rela tion to the body portion of the grease cup 1.

What is claimed is:

1. In a grease cup, a body having angularly related interior walls, a cap threaded on the body, a disk rigidly secured within said cap, a plurality of spring legs secured to said disk and depending therefrom in proximity to said walls, and pawls carried by the lower extremities of said legs for enthe cap by said disk, and paWls integral With gagement with the angular portionsof said engagement with the corners formed by said 10 Walls. y Y angular Walls of the body.

2. In a grease cup, a body having angu- In testimony whereof I aflix my signature larly related intierior galls, a cap thiieaded presenoe of two Witnesses. on the 0d sai cap aving an annu ar recess at onezzxtrernity, a disk mounted in the NORMAN CUMMINS' recess, a plurality of spring legs secured to Witnesses:

W. B. MORRILL, the lower extremities of the spring legs for M. F. KENNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

